About Gears
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About Roller Chain and Sprockets
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Sprockets for Double-Strand Metric Roller Chain
The double row of teeth on these sprockets are designed to fit into metric ISO double-strand roller chain. They have an unfinished bore that’s machined to the shaft diameter size listed. Machine them to fit any shaft up to the maximum shaft diameter size. The extended hub makes these sprockets more stable and more durable than flat sprockets. They meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.
For technical drawings and 3-D models, click on a part number.
| Number of Teeth | For Shaft Dia., mm | For Max. Shaft Dia., mm | OD, mm | Overall Wd., mm | Hub Dia., mm | Material | Specifications Met | Each | |
For ISO 08B-2 Roller Chain (12.7 mm Pitch) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 30 | 20 | 64 | 128.86 | 40 | 100 | Steel | DIN 8187, ISO 606 | 00000000 | 0000000 |
Metal Ratcheting Gears
Compared to plastic gears, these metal ratcheting gears are better for high-load, high-speed, and heavy duty applications. Used to prevent unwanted motion in jacks, tie downs, clutches, and winches, ratchet gears have sloped teeth that allow motion in one direction and prevent it in the other.
Gears with hardened teeth are more wear resistant than gears with teeth that are not hardened.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Wd. | Number of Teeth | OD | For Shaft Dia. | Mounting Distance | Material | Teeth Heat Treatment | Overall Wd. | Dia. | Wd. | Each | |
Round Bore | |||||||||||
| 25mm | 50 | 200mm | 20mm | 122.4mm | 1045 Carbon Steel | Hardened | 43 mm | 100 mm | 18 mm | 00000000 | 0000000 |